[Q]: My feet were blistered.
What is the cause?

[A]: I went hiking.


[Q]: The bird couldn't fly.
What is the cause?

[A]: It injured its wing.


[Q]: A water pipe in the house burst.
What is the cause?

[A]: The pipe froze.


[Q]: I stood on one foot.
What is the effect?

[A]:
My balance wavered.